RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

Rajasthan Board RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 Textbook Exercise Questions and Answers.

Rajasthan Board RBSE Solutions for Class 12 Maths in Hindi Medium & English Medium are part of RBSE Solutions for Class 12. Students can also read RBSE Class 12 Maths Important Questions for exam preparation. Students can also go through RBSE Class 12 Maths Notes to understand and remember the concepts easily.

RBSE Class 12 Maths Solutions Chapter 7 समाकलन Ex 7.1

प्रश्न 1.
sin 2x
हल:
हम जानते हैं कि
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 1

RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

प्रश्न 2.
cos 3x
हल:
हम जानते हैं कि \(\frac{d}{d x}\) sin 3x = 3 cos 3x
\(\frac{1}{3}\) \(\frac{d}{d x}\) (sin 3x) = cos 3x
∴ ∫cos 3x dx = \(\frac{1}{3}\) sin 3x + C

प्रश्न 3.
e2x
हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1  2

प्रश्न 4.
(ax + b)2
हल:
हम जानते हैं कि \(\frac{d}{d x}\)(ax + b)3 = 3a (ax + b)2
या \(\frac{d}{d x}\)(\(\frac{1}{3 a}\)(ax + b)3) = (ax + b)2
या ∫(ax + b)2 dx = \(\frac{1}{3 a}\)(ax + b)3

प्रश्न 5.
sin 2x - 4e3x
हल:
∵ ∫(sin 2x - 4e3x) dx = ∫(sin 2x)dx - 4∫e3x dx .... (1)
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 3

RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

निम्नलिखित समाकलनों को ज्ञात कीजिए

प्रश्न 6.
∫(4e3x + 1) dx
हल:
∫4e3x + 1) dx = 4 ∫e3x dx + ∫dx
= \(\frac{4}{3}\)e3x + x + C

प्रश्न 7.
∫x2 (1 - \(\frac{1}{x^2}\)) dx
हल:
∫x2(1 - \(\frac{1}{x^2}\)) dx = ∫(x2 - x2 . \(\frac{1}{x^2}\)) dx = ∫(x2 - 1) dx
= \(\frac{x^3}{3}\) - x + C

प्रश्न 8.
∫(ax2 + bx + c)dx
हल:
∫(ax2 + bx + c) dx = a∫x2 dx + b∫ x dx + c∫dx
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 4

प्रश्न 9.
∫(2x2 + ex) dx
हल:
∫(2x2 + ex) dx = 2 ∫x2 dx + ∫ex dx
= 2. \(\frac{x^3}{3}\) + ex + C = \(\frac{2 x^3}{3}\) + ex + C

RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

प्रश्न 10.
\(\left(\sqrt{x}-\frac{1}{\sqrt{x}}\right)^2\) dx
हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 5

प्रश्न 11.
\(\frac{x^3+5 x^2-4}{x^2}\) dx
हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 6

प्रश्न 12.
\(\frac{x^3+3 x+4}{\sqrt{x}}\) dx
हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 7

RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

प्रश्न 13.
\(\frac{x^3-x^2+x-1}{x-1}\) dx
हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 8

प्रश्न 14.
∫(1 - x)√x dx
हल:
∫(1 - x)√x dx
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 9

प्रश्न 15.
∫(√x(3x2 + 2x + 3) dx
हल:
∫(√x(3x2 + 2x + 3) dx
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 10

RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

प्रश्न 16.
∫(2x - 3 cos x + ex) dx
हल:
∫(2x - 3 cos x + ex) dx
= 2∫x dx - 3∫cos x dx + ∫ex dx
= 2 . \(\frac{x^2}{2}\) - 3 sin x + ex + C
= x2 - 3 sin x + ex + C

प्रश्न 17.
∫(2x2 - 3 sin x + 5√x) dx
हल:
∫(2x2 - 3 sin x + 5√x) dx
= 2 ∫x2 dx = 3∫sin x dx + 5∫ √x dx
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 11

प्रश्न 18.
∫sec x(sec x + tan x) dx
हल:
∫sec x(sec x + tan x) dx
= ∫(sec2 x + sec x tan x)dx
= ∫sec2 x dx + ∫sec x tan x dx
= tan x + sec x + C

प्रश्न 19.
\(\frac{\sec ^2 x}{{cosec}^2 x}\) dx
हल:
\(\frac{\sec ^2 x}{{cosec}^2 x}\) dx = ∫\(\frac{\sin ^2 x}{\cos ^2 x}\) = ∫tan2 x dx
= ∫(sec2 x - 1) dx = ∫sec2 x dx - ∫dx
= tan x - x + C

प्रश्न 20.
\(\frac{2-3 \sin x}{\cos ^2 x}\) dx
हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 12
= 2 ∫sec2 x dx - 3∫secx tan x dx
= 2 tan x - 3 sec x + C

RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1

प्रश्न 21 व 22 में सही उत्तर का चयन कीजिए

प्रश्न 21.
(√x + \(\frac{1}{\sqrt{x}}\)) का प्रतिअवकलज है:
(A) \(\frac{1}{3} x^{\frac{1}{3}}+2 x^{\frac{1}{2}}+C\)
(B) \(\frac{2}{3} x^{\frac{2}{3}}+\frac{1}{2} x^2+\mathrm{C}\)
(C) \(\frac{2}{3} x^{\frac{3}{2}}+2 x^{\frac{1}{2}}+C\)
(D) \(\frac{3}{2} x^{\frac{3}{2}}+\frac{1}{2} x^{\frac{1}{2}}+\mathrm{C}\)
उत्तर:
(C) \(\frac{2}{3} x^{\frac{3}{2}}+2 x^{\frac{1}{2}}+C\)

हल:
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 13

प्रश्न 22.
यदि \(\frac{d}{d x}\)f(x) = 4x3 - \(\frac{3}{x^4}\) जिसमें (2) = 0 तो f(x) है:
(A) \(x^4+\frac{1}{x^3}-\frac{129}{8}\)
(B) \(x^3+\frac{1}{x^4}+\frac{129}{8}\)
(C) \(x^4+\frac{1}{x^3}+\frac{129}{8}\)
(D) \(x^3+\frac{1}{x^4}-\frac{129}{8}\)
उत्तर:
(A) \(x^4+\frac{1}{x^3}-\frac{129}{8}\)

हल:
समाकलन करने पर
RBSE Solutions for Class 12 Maths Chapter 7 समाकलन Ex 7.1 14

Bhagya
Last Updated on Nov. 8, 2023, 10:08 a.m.
Published Nov. 7, 2023